菜豆种皮颜色由两对非等位基因aa和bb调控.a基因控制色素合成a 显性基因 出现色素aa和aa的效应相同b基因为修饰基因淡化颜色 Template




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tomski菜豆种皮颜色由两对非等位基因aa和bb调控.a基因控制色素合成a 显性基因 出现色素aa和aa的效应相同b基因为修饰基因淡化颜色 coloring